From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
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To: | Fabrízio de Royes Mello <fabriziomello(at)gmail(dot)com> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Thom Brown <thom(at)linux(dot)com>, Christoph Berg <cb(at)df7cb(dot)de>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>, Stephen Frost <sfrost(at)snowman(dot)net> |
Subject: | Re: [GSoC2014] Patch ALTER TABLE ... SET LOGGED |
Date: | 2014-08-22 20:23:31 |
Message-ID: | 20140822202331.GS6343@eldon.alvh.no-ip.org |
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Lists: | pgsql-hackers |
Fabrízio de Royes Mello wrote:
> On Fri, Aug 22, 2014 at 4:45 PM, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
> wrote:
> > I pointed out, in the email just before pushing the patch, that perhaps
> > we should pass down the new relpersistence flag into finish_heap_swap,
> > and from there we could pass it down to reindex_index() which is where
> > it would be needed. I'm not sure it's worth the trouble, but I think we
> > can still ask Fabrizio to rework that part.
> I can rework this part if it's a real concern.
I guess we can make a better assessment by seeing what it would take.
I'm afraid it will turn out to be really ugly.
Now, there's some desire to have unlogged indexes on logged tables; I
guess if we have that, then eventually there will also be a desire to
swap individual indexes from logged to unlogged. Perhaps whatever fix
we come up with here would pave the road for that future feature.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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